CVE-2026-41185

When Calico is configured with the Azure IPAM plugin, the Calico CNI binary mutates the incoming CNI configuration to attach subnet information before delegating to the IPAM plugin. After mutating, the Azure IPAM helper logs the entire unmarshaled configuration map (stdinData) at INFO level to /var/log/calico/cni/cni.log on every CNI ADD and DEL invocation — once per pod scheduled or terminated on the node. When the cluster is deployed using token-based Kubernetes authentication, this log entry contains the ServiceAccount token, client key, and certificate authority in plaintext. Any principal with read access to /var/log/calico/cni/cni.log on a node can read these logs and extract the credentials, which grant cluster-wide Calico networking admin privileges.

CVSS

No CVSS.

References

Link	Resource
https://github.com/projectcalico/calico/pull/12502
https://github.com/projectcalico/calico/pull/12526
https://github.com/projectcalico/calico/pull/12527
https://www.tigera.io/security-bulletins/tta-2026-002/

Configurations

No configuration.

History

28 May 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-28 17:16

Updated : 2026-05-28 18:55

NVD link : CVE-2026-41185

Mitre link : CVE-2026-41185

CVE.ORG link : CVE-2026-41185

JSON object : View

Products Affected

No product.

CWE

CWE-532

Insertion of Sensitive Information into Log File

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